Ocean Zones
Which zone is also called the shore?
intertidal zone
A place where freshwater from the river mixes with saltwater from the sea
How many major oceans are there?
5
0-200m also known as the Sunlight Zone
Epipelagic zone
What is the location of the intertidal zone?
Between the highest high tide line and the lowest low tide line
Which zone starts at the low tide line and ends at the continental shelf?
The neritic zone or coastal ocean zone
What kind of water is in estuaries?
brackish water
What is ocean water made of?
salt water
Why do plants live in the sunlight zone and not in the midnight zone.
They receive enough sunlight to grow in the sunlight zone, there is no light in the midnight zone
barnacles, clams, starfish, snails, hermit crabs, sponge, urchin, sea lettuce, anemone, seagull, mussels
More than 90% of all marine organisms live here.
The open ocean or pelagic zone
What organism is important for filtering organic matter and debris out of water?
oysters
What percent of Earth's surface is covered in saltwater?
97%
Which zone extends BELOW 6000m?
The Trench Zone / Hadalpelagic Zone
Name one major factor that organisms must adapt to in order to live in the intertidal zone.
Wave action, extreme temperature changes, completely underwater sometimes, completely exposed to the air other times, etc.
Which zone is divided into 5 layers based on light penetration and depth?
The Open Ocean or Pelagic Zone
Why does freshwater float on top of salt water?
It is less DENSE/ density
alkaline (base)
What happens to temperature, sunlight, and pressure as the depth increases?
colder, darker, more pressure
Which zone begins where the intertidal zone ends?
The neritic zone (coastal zone
Name the layers of the Pelagic zone (common names)
sunlight zone, twilight zone, and midnight zone, the abyss, and the trenches
sponge, cradle, eggbeater/mixer, rolaids, strainer, cereal, soap, bed
Name all 5 layers in order from top to bottom?
Sunlight, Twilight, Midnight, The Abyss, The Trenches
What adaptations do clams and mussels have that allow them to adapt to the intertidal zone?
They can burrow in the sand/mud or attach themselves to rocks/ close shells to keep from drying out